Nut-lock.



PATENTED 00T. 1, 1907'.

'.I. L. .DOBLR NUT LOCK.

JOHN L. DOELP, OF CINCINNATI, OHIO.

NUT-LOCK.

Specification of Letters Patent.

Patented Oct. 1, 1907.

Application filed January 25,1907. Serial No. 354,090.

To all whom it may concern:

Be it known that I, JOHN L. DonLr, a citizen of the United States ofAmerica, resid'ing in Cincinnati, in the county of Hamilton and State ofOhio, have invented certain new and useful Improvements in Nut-Locks, ofwhich the following is a specification.

This invention relates to that class of nut locks in which the nut isprovided with a split sleeve that receives a clamping ring whichcompresses the sleeve, causing it to bind on the bolt and thus preventthe nut from working loose.

My U. S. Patent No. 659,2l5, of Oct. 9, 1900, shows a nut lock of thisclass in which the split sleeve is formed with a cam surface on itsperiphery and the ring is prosleeve is formed on its outer end with afiange for pre- A tion thereof inwards and retain it in this position,thus distorting the bore of the sleeve and making it impossible to screwthe nut on to the bolt. This, of course, was not always the case, but itsometimes happened. By my present improvements, I so form said flangethat there is no liability of the objections above referred to. In thenut lock shown in my prior patent, I formed the inner end of the ringwith a recess which was such that when the ring and sleeve wereassembled, the ring was out of engagement with the sleeve for about halfof its length. In my improved nut lock, the arrangements are such thatthe ring is in engagement with the sleeve throughout its entire length.Y

In the accompanying drawingsz-Figure I shows a side elevation of a boltand nut with my improvements applied. Fig. 2 shows an end eleva-tionthereof. Fig. 3 shows a side eleva-tion of a bolt anda section of thenut with its locking devices applied to the bolt. Fig. 4.- showsa'transverse section through the nut locking devices on the line 4-4 ofFig. 3, looking in the direction of the arrow. Fig. '5 is a perspectiveview of the nut and its locking devices. Fig. 6 is an inner end view ofthe locking ring. Figs. 7 and 8 are views on an enlarged scale and incentral, vertical section showing the manner in which the ring isapplied to the sleeve.

The bolt, A, it will be observed, is of ordinary form. Itsscrew-threaded portion may be straight or tapered, but is preferablymade straight as shown. My improvements do not depend on any specialconstruction with a corresponding surface, c,V on the interior of thering, Cf, which surrounds the slceve'at its outer end. The sleeve issplit so that it may be collapsed and grip the bolt when the ring isturned in one direction and to expand when the ring is turned to anotherposition.

In the drawings, the sleeve is shown as being split or slotted at 4places, cf, but a less or greater number of slits may be employed.

In order to prevent the ring from slipping off endwise when loose on thesleeve, I provide a stop, D, which projects from the sleeve across theend of the ring. I have shown this stop as being in the form of a iiangeformed integrally with the sleeve and extending entirely around it,being interrupted only by the slits, d, formed in it, which are in alinewith and form continuations of the slits, c/. The flange, D, is roundedon its periphery, presenting a curved outer edge at d, while the innerwall of the flange has a decided incline as indicated at d?. At F, justinside the fiange, the cam bearing surfaces are formed and in rear ofthis there is an inclined wall, f', joining an annular raised portion,

f2, which, by a concaved wall, f3, joins the front face of the nut, B.The ring, Cf, is formed with a wall, x, which corresponds in form withthe surfaces, f, f 2, f 3, and the front wall oi the nut, B, while at95, the cam surfaces corresponding withthe cam surfaces on the sleeveare produced. 'Ihe construction is such that the ring may be driven onto the sleeve and when driven on will closely fit it.

The manner in which the ring and sleeve are assembled is illustrated inFigs. 5, '7 and 8. Normally the sleeve is expanded, but when the ring isplaced axially in line with it and is driven towards the nut, the sleevewill be compressed to such an extent that the ring passes entirely overthe flange, D, after which the sections of the sleeve expand and theflange assumes the position shown in Fig. 8, at which time the ring isfree to turn on the sleeve, but is prevented from endwise movementthereon.

It will be understood that the ring is applied to the sleeve before Ithenut is applied to the bolt and when in use the nut carries the ring withit until the proper adjustmcnt is obtained. Then the ring may be turnedin such manner as to compress the sleeve and .cause it to grip tightlythe bolt thus securely locking the nut in place.

It will be observed that the nut and the ring are of practically thesame shape and the same wrench or tool may be used for turning them.

While the ring securely locks the nut in place when IlO desired, it mayalso` be readily turned to cause the sleeve to release its grip on thebolt and then the nut may be Withdrawn, but the ring cannot be separatedfrom the nut.

By inspection of Figs. 7 and 8, my present improvements Will be morereadily perceived. Fig. 7 shows the parts in the position they areplaced just before the ring is driven on to the sleeve. It will beobserved that the surfaces of the sleeve and ring are so in clined thatWhen the ring is driven towards the nut the former can easily pass overthe flange, D, compressing the sections o the sleeve in so doing andafter having passed overthe periphery oi the Iiange, the ring Willassume the position shown in Fig. 8, its outer' edge around its boresliding down the inclined surface, d2. I have found in practice that bythus constructing the parts, there is no possibility of one section oithe sleeve being compressed more than another', but that there is auniorm compression at all times and an immediate uniform expansion afterthe ring has passed the ilange. The inner Wall, of the ring fits closelythe corresponding Wall on the sleeve and nut, thus producing a solidstructure as shown in Fig. 8 and producing a long, gripping action onthe bolt.

I claim as my invention 1. The combination of a nut formed with a splitsleeve having a cam surface on its periphery, a ring surrounding thesleeve formed on its interior with a corresponding cam surface engagingthat on the sleeve and a stopilange on the outer end of the sleevehaving an inclined inner wall, down which the outer edge of the wall ofthe hole in the ringr slides when the latter is forced over the sleeve.

2. The combination of a nut formed with a split sleeve having,` a camsurface on its periphery and a ring surrounding the sleeve formed on itsinterior with a correspondingcani surface engaging lhat ou thc sleeveand a ange on the outer end of the sleeve formed with a curved peripheryand an inclined inner wall down which the outer edge of: the wall of thehole in the ringl slides when the latter is forced over the sleeve.

3, '.lrhe combination of a nut formed with a split sleeve having a canisurface on its periphery and raised rear walls, a iiange at the outerend olf the sleeve having an inclined inner wall and a ring surroundingthe sleeve formed on its interior with a cani surface en ing that on thesleeve and i'ornied also with an inner surface fitting the raisedsurface at the rear end of the sleeve the arrangement being such that asthe ring`- is forced on to the sleeve, the outer edge of the wall of thehole in the ring slides down the inclined surface of the flange andcauses the inner surface of the ring to lit closely on the sleevewhereby a solid and rigid structure is produced.

In testimoniv whereof, l have hereunto subscribed niy naine.

.TOIIN L` DOEL?.

Witnesses LLOYD B. Wien'r, C. M. Fonnns'ix

